====== Ubuntu - SystemD - Logs - Show logs of a unit ======

For instance, the ssh service unit.

<code bash>
sudo journalctl -u ssh
</code>

----

To view Postfix logs, run

<code bash>
sudo journalctl -u postfix
</code>

<WRAP info>
**NOTE:**  Some packages may still be configured to save logs to plain files such as the Postfix log files on Ubuntu (/var/log/mail.log).

  * Use a command-line text editor to peruse the logs.

</WRAP>